Tiger Swallowtail (LEP3) Papilio glaucus


     Common in every eastern city, this big bright swallowtail prefers phlox and thistle for nectar.  A similar species lives throughout the western United States.  Both are lemon-yellow with black tiger-stripes.  The underside, as shown in the drawing, has a field of blue patches along the outer part.  Orange spots run along the outer edge of the hindwing.  Here it is on garden phlox.